Casing for cleaning devices.



G. H. BEACH. CASING FOR CLEANING-DEVICES. APPLIOATION FILED FEB. 27, 1911.

Patented Apr. 21, 1914.

2 SHEETS-BHEET 1.

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@YOf/Hup O, H.. BEACH.

CASING FOR CLEANING DEVICES.

APPLICATION FILED FEB. 27, 1911.

I 1,094,050. Patented Apr. 21, 1914.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

CHESTER H. BEACH, OF BACINE', WISCONSIN, ASSIGNOR '10 WISCONSIN ELECTRIC COMPANY, OF RACDQ'E JUNCTION, WISCONSIN.

CASING non CLEANING DEVICES.

Specification of Letters Patent.

Patented Apr. 21, 1914.

To all whom it may concern Be it known that I, CHESTER H. BEACH, a citizen of the United States, and resident ofRacine, in the county of Racine and State of Wisconsin,'have invented certain new and useful Improvements in Casings for Clean-v by the fan. The apparatus is all contained within a casing that is partitioned to form two end chambers for the fans and an intermediate chamber for the motor, the casing partitions being provided with central apertures, whereby communication is established between the chambers. All of the chambers have separate ports that communicate with a suction shoe. 1 Air drawn into the end chambers is directed through discharge ports. formed therein, which ports communicate with a common exhaust port. Thus the casing is so arranged that as the air is drawn in from the suction shoe through the separate ports into the separate chambers it commingles in the end chambers and from thence is discharged, the air traveling through the intermediate chamber being divided in its travel to the end chambers and in said travel serves as a cooling medium for the motor. Thus the intermediate suction current is first distributed about the motorhousing for cooling the same and thereafter this current of air is divided and drawn into the opposite fan chambers where it commingles with the outer suction currents of air that are admitted'to said fan chambers,

from which chambers it is discharged by the action of the fans causing a vacuum of high efiiciency.

With the above objects in view my invention consists in what is herein described with reference to the accompanying illustrations and subsequently claimed.

In the drawings Figure 1 represents a transverse sectional view of a cleaner embodying the features of my invention with parts broken away and in section upon alower plane to moreclearly illustrate the details of construction, the general plane of the section being indicated u on line l-1 of Fig. 2; Fig. 2, a longitudina sectional view of the same as indicated by line 2-2 of Fig. 1, the motor housing being shown in full with parts broken away; Fig, 3, a detail longitudinal sectional view of the cleaner shell, the section being indicated by line 3-3 of Fig. 1, and Fig. 4;, an end elevation of the cleaner partly broken away and in section to more clearly illustrate certain structural features.

Referring by characters to the drawings, 1 represents a shell, the contour of which in cross section is spiral, the said casin constituting a fan casing that is provide with a forwardly disposed longitudinal suction shoe 2 and a rearwardly disposed discharge nozzle 3. The outer wall of the discharge nozzle projects at a tangent to the spiral wall of the casing at that point which is farthest from the axis about which it is described, the inner wall of the nozzle being arranged to Intersect the spiral wall of the casing at its nearest-point to said axis, about which axis a pair of fans are arranged to revolve in a manner to be hereinafter described. The spiral casing is provided with heads 4 and a pair of intermediate partition walls 5 having centrally disposed circular ports 6, the partition walls for convenience being separable from the casing body and secured.

thereto by screws or rivet that engage said casing body and ears that extend from the partitions, the ports 6 be ng concentric with the axis about which the casing is formed. The casing heads 4 are provided with ports 6 that are concentric with the artition wall ports. The heads and partition walls together form outer fan chambers 7 and an intermediate motor-chamber 8, communication between all of which chambers is established through the centrally disposed ports 6, 6. The shell head ports 6 are provided with ofi'set suction channel 9, that incase the suction orts 6 and merge into the suction shoe2 w iereby communication is established between the fan chambers 7 and said suction shoe at its ends, there being an intermediate peripheral inlet ort 10 in the motor chamber 8 that esta lishes communication between said motor chamber 8 and said shoe. Thus three distinct suction currents of air are maintained through the suction shoe to insure even distribution of the vacuum effect produced throughout the length of said shoe when the'cleaner is in operation. Discharge of air from the fan chambers is had through ports 11 that are formed in the walls of the fan chambers and communicate with the opposite ends of the common discharge nozzle. The casing is preferably cast in two sections for convenience in assemblage, the sections being provided with matched ears 1" that are secured together by bolts or rivets.

An electric motor housing 12 is mounted Within the motor chamber 8 by stay-brackets 13 that are rigidly connected to the housing and the inner walls of said shell, the housing being provided with end bearings 12 for an electric motor-shaft 14 which carries a motor armature 15 and the usual commutator, the brushes 16 therefor being carried by the housing, together with the field magnets 17. The ends of the motor-shaft project through the housing journals and have secured thereto a pair of fans. Each fan comprises a disk 18 against which the suction blasts are deflected in opposite directions, which disks carry a plurality of radially disposed peripheral fan blades 19.

From the foregoing description it will be seen that when the motor is energized the directly connected fans will cause three separate suction currents'of air to pass from the suction shoe, as indicated by the arrows in Figs. 2' and 3, the fan being rotated in the direction indicated by the arrows in Figs. land 4. The two outer currents of air travel through the suction channel 9 and head ports 6* and into the fan-chambers, toward the hub ends of the fans, while the intermediate current of air passesup from the suction shoe 2 through the inlet port 10 to the motor chamber 8, where it circulates about the motor-housing, cooling the same as it is divided by the suction action of the fans,.which air currents divide and enter the fan chambers through the partition wall ports 6.- The divided currents of air from the motor chamber thereafter commingle with the outer currents of air drawn into the fan chambers throughthe ports 6 and together the commingled air currents are forced through the discharge ports 11 into the common discharge nozzle, carrying with them all dust or foreign matter that has been drawn up from the surface to be cleaned as the suction-shoe travels thereover. The accumulated dust and air is thereafter trapped in a suitable separator or screen-cloth bag 20 that is attached to the discharge nozzle through the medium of a collar 21. The

collar is detachably connected to the nozzle 5' in a groove formed in one end wall of said by means of a flange 22 which is seated withprovided with nozzle, the collar flange opposite the groove being held to its seat by a spring 23. A bracket 24 having a serrated circular head 25 is secured to the shell, as best shown in Figs. 1 and 2, the head being provided with a centrally disposed non-rotatory stud 26 for the support of a suitable handle 27. The handle is provided with a serrated head 28 similar to the bracket head and is centrally apertured for the reception of a sleeve 29, which sleeve is shrunk therein or otherwise secured to said apertures, its end being threaded and extended from the head as shown. In assemblin the joint the sleeve 29 is loosely fitted over tie stud and thereafter a thumb-nut 30 having a screw-threaded socket is run upon the threaded head of the thimble. The thumb-nut is rotatabl mounted upon the stud 26, being journa ed upon the shank of a screw 31 which is tap ed into the end of said stud whereby shoul ers are formed to prevent lateral movement ofthe thumb-nut. By this arrangement when the thumb-nut is revolved upon the stud in one direction, the serrations of the handle head will be withdrawn from engagement with the bracket head due to the threaded engagement between the sleeve and thumb-nut, and in this position, as shown in Fig. 2, the handle is free to swing upon the stud. Should it be desired to adjust the handle at a fixed angle, the same may be accomplished by rotating the thumb-nut in the opposite direction from that mentioned, whereby its screw-threaded engagement with the sleeve will cause the handle head to move inwardly and effect engagement between the serrations of the bracket head. Thus said heads will be rigidly clamped together.

I claim:

1. In a cleaning device, a casing having end heads provided with exterior channels, two partitions arranged parallel to the heads whereby the casing is divided into a central chamber and two end chambers, the casing heads and partitions each being provided with centrally disposed ports and the central chamber with a peripheral inlet port, a shoe in communication with the central chamber inlet port and head channels, and a nozzle in connection with the casing, the same being ports communicating with each end chamber.

2. In a cleaning device, a casing having end heads provided with ports and offset channels in communication with the ports,

division walls arranged in the casing spaced from the end heads, the division walls being provided with ports, whereby the casin is divided into a central chamber and en chambers communicating with each other, a nozzle extending from the casing having orts communicating with the end chamers, and a shoe extending from the aforesaid casing, the shoe being in communicamountedwithin the casing and spaced from tion at its ends with the head channels and also in communication with the central chamber. t

'3. In a cleaner device a casing having circular end heads provided with centrally disposed ports and offset channels in communication with the ports, division walls the end heads having centrally dispose ports, a nozzle extendlng. longitudinally o the casing having ports in communication .ing, the shoe being the oflset channels of the casing heads and 15 with the casing adjacent to its end heads,

and a shoe extending from the aforesaid cas- 1n commumcatlon with the central portion of said casing.

In testimony that I claim the foregoing I have hereunto set my hand at Racine in the county of Racine and State of-Wisconsin in the presence of two Witnesses.

- CHESTER H. BEACH. Witnesses:

TOULIE TOLFSON, JonN W. Ruccanan. 

